Surprised you guys haven't realised this yet. Generally all metallic cladding is installed with its protective film on until project completion when it is removed. It will be just like the renders. See 5 Broadgate as an example of this.

You might well be correct about the surface of the cladding.

But that still wouldn't account for the clear joins between each panel. That's what bothers me most, given that the renders suggested a seamless flow.